First log in to QQ on the computer, then click the penguin icon at the bottom corner of the QQ panel, select Help in turn, and then click to enter my QQ Center, as shown in the following figure:

2. After entering my QQ ZTE, we will switch to the "Dynamic" option, and then click to switch to "My Dynamic", as shown below:

Third, finally, we can see here that we have published the history of QQ personalized signature before. When we put the mouse on it, an "X" button will be displayed in the upper right corner. Click it to delete the dynamic, as shown in the figure below.